CN113000579A - Device and method for ex-situ remediation of POPs pesticide contaminated soil - Google Patents
Device and method for ex-situ remediation of POPs pesticide contaminated soil Download PDFInfo
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- CN113000579A CN113000579A CN202110124704.XA CN202110124704A CN113000579A CN 113000579 A CN113000579 A CN 113000579A CN 202110124704 A CN202110124704 A CN 202110124704A CN 113000579 A CN113000579 A CN 113000579A
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- soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
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- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Food Science & Technology (AREA)
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Abstract
本发明公开了一种POPs农药类污染土壤异位修复的装置，主要包括：处理箱、设置在处理箱内部用于土壤粉碎的粉碎室、对称设置在粉碎室两端的进土管、连通在粉碎室下方两端的用于控制粉碎土壤进料频率的控制机构、连通在控制机构下方的干燥机构、用于同时驱动控制机构和干燥机构的第二驱动机构、连通在干燥机构下方的收集室、设置在干燥机构下方的喷淋液箱、通过连通管与喷淋液箱相连通的多个喷淋管、通过连通管与收集室相连通的多个搅拌管和设置在收集室下方用于同时驱动搅拌管和喷淋管的第三驱动机构；本发明通过对土壤进行粉碎、控制干燥、搅拌喷淋，提高了土壤修复的效率和效果。
The invention discloses a device for ectopic restoration of POPs pesticide-contaminated soil, which mainly comprises: a treatment box, a pulverizing chamber arranged inside the treatment box for soil pulverization, soil inlet pipes symmetrically arranged at both ends of the pulverizing chamber, and communicating with the pulverizing chamber. A control mechanism for controlling the feeding frequency of crushed soil at both ends below, a drying mechanism connected under the control mechanism, a second driving mechanism for simultaneously driving the control mechanism and the drying mechanism, a collection chamber connected under the drying mechanism, and a The spray liquid tank under the drying mechanism, the multiple spray pipes connected with the spray liquid tank through the communication pipe, the multiple stirring pipes connected with the collection chamber through the communication pipe, and the multiple stirring pipes connected with the collection chamber through the communication pipe, are arranged under the collection chamber for driving stirring at the same time The third driving mechanism of the pipe and the spray pipe; the invention improves the efficiency and effect of soil remediation by crushing the soil, controlling drying, stirring and spraying.
Description
Technical Field
The invention relates to the technical field of contaminated soil treatment, in particular to a device and a method for ex-situ remediation of POPs (persistent organic pollutants) pesticide contaminated soil.
Background
With the 'two-in-three' of the city, after pesticide chemical enterprises in the urban area or suburb are closed and moved, a large number of pesticide chemical polluted sites to be repaired urgently are generated. Because the fields generally have the characteristics of long production history, complex pollution components, high soil viscosity and the like, and the characteristics of large quantity, wide range, dense peripheral sensitive receptors and the like, compared with other industrial pollution fields, the fields have larger dangers and higher risks, seriously threaten human living health and environmental safety, and become a great soil environment problem to be solved urgently at present. The rapid and high-flux pesticide pollution site high-efficiency treatment equipment needs to be developed urgently, the development of the repair industry is promoted, the soil resources are protected, the ecological environment is improved, and the people can live at ease "
Because China is generally in the starting stage in the field of polluted site remediation, compared with the approximately 40-year history of polluted site remediation in developed countries such as America, Western Europe and the like, China is far behind European and American countries in the aspect of research and development of polluted site remediation technical equipment and is far from being adapted to urgent needs of the market in the field of polluted site remediation in China. Particularly in the field of research and development of soil spraying equipment, developed countries start early, the technology is mature, the equipment stability is high, but the equipment introduction cost is high; the research and development of domestic similar equipment are just started, the technical foundation is weak, the engineering application experience is lacked, and the problems that the equipment performance cannot meet the requirements, the failure rate is high and the like generally exist.
Present soil sprays equipment area is great, adopt the auger machine to transport soil mostly, then incessant crushing, the dry sterilization of soil after will smashing again, restore at last and spray, when spraying, because soil piles up more, lead to the stirring inconvenient, spray uneven phenomenon, and incessant crushing also produces great degree of difficulty to the drying of soil, make drying cost increase, and also can appear the not thorough phenomenon of drying, lead to spraying prosthetic effect relatively poor.
Disclosure of Invention
In order to solve the technical problem, the invention provides a device and a method for ex-situ remediation of POPs pesticide contaminated soil.
The first technical point of the invention is as follows:
a device for ex-situ remediation of POPs pesticide contaminated soil mainly comprises: the device comprises a processing box, a crushing chamber arranged in the processing box and used for crushing soil, soil inlet pipes symmetrically arranged at two ends of the crushing chamber, control mechanisms communicated with two ends below the crushing chamber and used for controlling the feeding frequency of the crushed soil, a drying mechanism communicated below each control mechanism, a second driving mechanism used for driving the control mechanisms and the drying mechanism simultaneously, a collecting chamber communicated below the drying mechanism and used for collecting soil, a spray liquid box arranged below the drying mechanism, a plurality of spray pipes communicated with the spray liquid box through communicating pipes, a plurality of stirring pipes communicated with the collecting chamber through communicating pipes, and a third driving mechanism arranged below the collecting chamber and used for driving the stirring pipes and the spray pipes simultaneously;
a sedimentation box is arranged on the bottom surface inside the treatment box, fine holes are formed in the sedimentation box, soil is sedimentated in the sedimentation box, and spray liquid flows out of the fine holes and is discharged out of the treatment box;
a crushing mechanism is arranged in the crushing chamber and reciprocates horizontally in the crushing chamber through a first driving mechanism;
the control mechanism includes: the control structure comprises a plurality of control panels arranged side by side, rocking rods rotatably arranged at two ends of each control panel, and connecting rods for connecting two adjacent rocking rods, wherein two ends of each control panel penetrate through a shell of the control structure, and when the control panels are horizontally arranged, circular channels for soil to pass through can be blocked in the control structure;
the drying mechanism comprises a plurality of mutually meshed drying columns, a rotating shaft is arranged on the bottom surface of each drying column, the drying columns are of a cone structure, and the cone tips of the drying columns are connected to the same vertical central shaft of the drying mechanism;
the third drive mechanism includes: the driving rotary table is rotatably arranged on the bottom surface of the spraying liquid tank, and the driving column is fixedly arranged at the position of the driving rotary table far away from the circle center;
the spraying pipes and the stirring pipes are arranged in an annular array by taking the driving turntable as a circle center;
each of the shower pipes includes: the spray head is arranged below the spray pipe, the piston is arranged in the spray pipe in a sliding manner, the piston rod controls the piston to slide, the liquid inlet is formed in the top of the spray pipe, the control door is arranged at the liquid inlet, one end of the piston rod is connected to the piston, and the other end of the piston rod is connected to the driving column;
the agitator pipe sets up under the vertical projection of shower, the agitator pipe includes: the setting is in the dry soil import of stirred tube one end, setting are in the inside screw thread section of thick bamboo of other end port, rotate and set up lead screw, setting in the screw thread section of thick bamboo are in the stirred tube inner wall with spring, setting between the screw thread section of thick bamboo are in the lead screw is located the one overhead stirring head of stirred tube, and the lead screw other end is connected to on the drive column, the pipeline material of stirred tube interlude is the filter screen that has the aperture.
Further, the driving mechanism includes: the crushing device comprises a driving wheel, a fixed column fixedly arranged on the position, deviating from the circle center, of the driving wheel, a driving rocker provided with a sliding groove in the middle and a sliding plate capable of horizontally sliding in the crushing chamber, wherein the fixed column is slidably arranged in the sliding groove, one end of the driving rocker is rotatably arranged at the bottom of the driving mechanism, the other end of the driving rocker is rotatably arranged at the center of the sliding plate, the sliding plate is slidably arranged in a sliding way, the sliding way is arranged at the middle position of the bottom surface in the crushing chamber, and the driving rocker swings by taking a bottom connection point as the center through rotation of the driving wheel, so that the sliding plate horizontally slides in the sliding way in a reciprocating mode.
Further, the crushing mechanism includes: the setting is in support frame, rotation on the slide both ends set up a plurality of crushing wheels on the support frame, set up every crushing wheel last second bevel gear, with second bevel gear engaged with first bevel gear, it is a plurality of first bevel gear is connected and accomplishes the drive through the actuating lever, drives the reciprocal horizontal motion of crushing wheel through the support frame, guarantees the crushing soil of bigger degree, though soil is pricked and is piled, also can wear into soil and pile, reciprocal business turn over smashes soil, and crushing effect is better, for the bedding well of subsequent process step.
Further, the second driving mechanism includes: the setting is in the pivot with the driven tooth that control panel was served, with driven tooth mesh's rack mutually, the rack sets up on one side of a hydraulic stem, the one end of hydraulic stem is fixed to be set up smash the bottom of room, and the other end is through a setting cam on the drying mechanism is driven, and the cam rotates, jack-up hydraulic stem, makes the hydraulic stem rebound, makes the rack rotate driven tooth, makes the control panel rotate to the frequency of the entering drying mechanism of control soil, the mode of feeding soil of little intermittent type more helps the drying effect of following drying mechanism to soil, and the better drying effect is the higher with higher harmful substance clearance in the soil.
Furthermore, the area product of the cross section of the channel is smaller than the area of the cross section of the drying mechanism, so that soil is prevented from smoothly entering the drying mechanism.
Furthermore, smash indoor portion and be located smash the position department of rubbing crusher structure below and be provided with the filter, filter the soil after smashing, guarantee that the soil after smashing gets into control mechanism in the back, can not block up the machine, more guarantee the drying rate of drying mechanism to soil powder.
Furthermore, one end of the control door close to the driving column is connected with the liquid inlet through a limiting rotating shaft, and the limiting rotating shaft can control the opening and the closing of the control door more conveniently.
Further, the drying column includes: take screwed aluminium system shell with inlay the heating rod of the inside dress of dry post, the heating rod heats through outside circular telegram, and a plurality of dry post intermeshing not only can extrude soil, can also dry soil in the extruded, because the dry post of soil direct laminating, so drying rate is faster, and the shell thermal conductivity of aluminium system is better.
Further, the driven teeth are arranged at one end of a rotating shaft and one end of a control plate which are positioned on the same vertical shaft, and normal operation of the drying mechanism and the control mechanism can be completed only by completing the driving of the rotating shaft and the control plate.
The second technical point of the invention is as follows:
the method for repairing soil by using the equipment comprises the following steps:
s1 crushing of soil
Soil enters the crushing chamber from the soil inlet pipe, the driving wheel rotates, the fixed column slides in the chute, and because one end of the driving rocker is fixed on the inner bottom surface of the first driving mechanism, the other end of the driving rocker drives the sliding plate to slide in the chute, namely, the support frame starts to slide horizontally in the crushing chamber, the motor connected with the driving rod is started to rotate the driving rod, each crushing wheel rotates through the meshing action of the first bevel gear and the second bevel gear, and the soil crushing is completed;
s2: drying of soil
The crushed soil enters the control mechanism through the filter plate, the cam rotates to enable the hydraulic rod provided with the rack to do telescopic motion, the rack is meshed with the driven gear to enable the control plate to turn over, intermittent soil feeding is completed, the drying column rotates to complete extrusion drying, and the dried soil enters the collection chamber;
s3 soil spray
The soil after drying gets into the agitator pipe from the collection room, the spray solution passes through the spray solution case and gets into the shower, the drive carousel rotates, drive the drive column and rotate, the piston rod drives the piston and begins to slide, the piston is outwards stimulateeed, the control door is opened, the spray solution gets into, the piston extrudees inwards, the control door is closed, the spray solution is spout from the shower head, because lead screw and piston rod all connect on the drive column, when the piston extrudees and pulls out, the lead screw all can drive the agitator head and stir, make the spray solution contact soil to a great extent, the soil after the washing oozes the filter screen, deposit in the setting box of processing bottom of the case portion, the setting box is last to have the pore, soil deposits in the setting box, the spray solution flows out from the pore, and discharge.
The spraying liquid in the scheme is as follows: tween80 organic solvent at a concentration of 5 mmol/L.
The soil restoring capacity of the device reaches 24-26m3And d, the removal rate of the target pollutants in the soil is more than 90% through intermittent drying and intermittent stirring and spraying treatment. The environment quality of the repaired soil meets the standard of the corresponding land type soil or meets the requirement of a safe recycling function, and the treated waste liquid meets the requirement of safe discharge.
Compared with the prior art, the invention has the beneficial effects that:
firstly, the crushing chamber is arranged, the crushing mechanism is arranged in the crushing chamber, and the first driving mechanism drives the crushing mechanism to enable the crushing mechanism to reciprocate horizontally in the crushing chamber to intermittently crush the entering soil and continuously enter and exit the soil pile, so that the crushing effect is better, and the soil is ensured to be loose without blocking the equipment.
Secondly, the control mechanism is arranged, the drying mechanism is connected below the control mechanism, the control plate on the control mechanism and the drying columns of the drying mechanism are driven by the rack at the same time, the rack vertically reciprocates to enable the control plate to continuously open and close, the ground soil intermittently enters the drying mechanism to be dried, and the drying columns meshed with each other in the drying mechanism complete heating and drying while extruding the soil, so that the drying speed is higher, and the effect is better.
Thirdly, the screw rod and the piston rod are driven by the driving column through the third driving mechanism, so that the soil is stirred and overturned by the stirring pipe when the spraying pipe sprays the spraying liquid, the soil can more uniformly contact with the spraying liquid, and the soil restoration effect is ensured.
And fourthly, the soil is repaired in a mode of intermittent feeding, extrusion drying and stirring spraying, so that the repairing cost is low, the occupied area is small, the repairing speed is convenient to control, and the repairing effect is better.
Drawings
FIG. 1 is a front view of the internal structural schematic of the present invention;
FIG. 2 is an enlarged view of the schematic structure of the area A in FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the schematic structure of the area B in FIG. 1 according to the present invention;
FIG. 4 is a top view of a schematic of the drying mechanism of the present invention;
FIG. 5 is a top view of the control mechanism of the present invention with the control panel open;
FIG. 6 is a top view of the control mechanism of the present invention showing the closed configuration of the control panel;
fig. 7 is a schematic structural view of a third driving mechanism of the present invention, which is taken from a top view.
Wherein, 1, a processing box, 11, a soil inlet pipe, 2, a crushing chamber, 21, a crushing mechanism, 211, a support frame, 212, a crushing wheel, 213, a driving rod, 214, a first bevel gear, 215, a second bevel gear, 22, a first driving mechanism, 221, a driving wheel, 222, a fixed column, 223, a sliding chute, 224, a sliding plate, 225, a sliding way, 226, a driving rod, 23, a filter plate, 3, a control mechanism, 31, a control panel, 32, a rocker, 33, a connecting rod, 34, a channel, 4, a drying mechanism, 41, a drying column, 411, a rotating shaft, 5, a second driving mechanism, 51, a cam, 52, a hydraulic rod, 521, a rack, 53, a driven gear, 6, a collecting chamber, 7, a spray liquid box, 8, a third driving mechanism, 81, a driving turntable, 82, a driving column, 9, a spray pipe, 91, a spray head, 92, a piston, 93, a piston rod, 94, a control door, 95 and a liquid, 10. the device comprises a stirring pipe, 101, a filter screen, 102, a screw rod, 103, a threaded cylinder, 104, a spring, 105, a stirring head, 106 and a dry soil inlet.
Detailed Description
Example (b):
as shown in fig. 1, a device for ex-situ remediation of soil polluted by POPs and pesticides mainly comprises: the device comprises a processing box 1, a crushing chamber 2 arranged in the processing box 1 and used for crushing soil, soil inlet pipes 11 symmetrically arranged at two ends of the crushing chamber 2, control mechanisms 3 communicated with two ends below the crushing chamber 2 and used for controlling the feeding frequency of the crushed soil, and drying mechanisms 4 communicated with the lower part of each control mechanism 3, the soil treatment device comprises a second driving mechanism 5, a collecting chamber 6, a spray liquid box 7, a plurality of spray pipes 9, a plurality of stirring pipes 10 and a third driving mechanism 8, wherein the second driving mechanism 5 is used for driving the control mechanism 3 and the drying mechanism 4 simultaneously, the collecting chamber 6 is communicated below the drying mechanism 4 and used for collecting soil, the spray liquid box 7 is arranged below the drying mechanism 4, the spray pipes 9 are communicated with the spray liquid box 7 through communicating pipes, the stirring pipes 10 are communicated with the collecting chamber 6 through communicating pipes, and the third driving mechanism 8 is arranged below the collecting chamber 6 and used for driving the stirring pipes 10 and the spray pipes 9 simultaneously;
as shown in fig. 1, a sedimentation box 12 is arranged on the bottom surface inside the treatment box 1, the sedimentation box 12 is provided with fine holes, soil is sedimented in the sedimentation box 12, and spray liquid flows out of the fine holes and is discharged out of the treatment box 1 for treatment;
as shown in fig. 1 and 2, a crushing mechanism 21 is provided in the crushing chamber 2, and the crushing mechanism 21 is reciprocated horizontally in the crushing chamber 2 by a first driving mechanism 22;
as shown in fig. 1, 3, 5, and 6, the control mechanism 3 includes: the soil treatment device comprises a plurality of control plates 31 arranged side by side, rocking rods 32 rotatably arranged at two ends of each control plate 31, and a connecting rod 33 used for connecting two adjacent rocking rods 32, wherein two ends of each control plate 31 penetrate through the shell of the control structure 3, and when the control plates 31 are horizontally arranged, the circular channels 34 which are arranged in the control structure 3 and used for soil to pass through can be blocked;
as shown in fig. 1, 3 and 4, the drying mechanism 4 includes a plurality of mutually engaged drying columns 41, a rotating shaft 411 penetrating out of a housing of the drying mechanism 4 is provided on a bottom surface of each drying column 41, the drying columns 41 are of a cone structure, and a cone tip of each drying column 41 is connected to the same one on a vertical central axis of the drying mechanism 4;
as shown in fig. 1 and 7, the third drive mechanism 8 includes: a driving turntable 81 rotationally arranged on the bottom surface of the spray liquid tank 7 and a driving column 82 fixedly arranged at the position of the driving turntable 81 far away from the center of a circle;
as shown in fig. 7, the spraying pipes 9 and the stirring pipes 10 are both arranged in an annular array with the driving turntable 81 as a circle center;
as shown in fig. 1, each of the shower pipes 9 includes: the spray head 91 is arranged below the spray pipe 9, the piston 92 is slidably arranged in the spray pipe 9, the piston rod 93 is used for controlling the piston 92 to slide, the liquid inlet 95 is arranged at the top of the spray pipe 9, the control door 94 is arranged at the liquid inlet 95, one end of the piston rod 93 is connected to the piston 92, and the other end of the piston rod is connected to the driving column 82;
as shown in fig. 1, the stirring pipe 10 is disposed under a vertical projection of the shower pipe 9, and the stirring pipe 10 includes: the setting is in dry soil import 106 on agitator pipe 10 one end, set up at the inside screw thread section of thick bamboo 103 of other end port, rotate and set up lead screw 102 in the screw thread section of thick bamboo 103, set up agitator pipe 10 inner wall with spring 104 between the screw thread section of thick bamboo 103, set up and be in lead screw 102 is located agitator pipe 10 one end on the stirring head 105, the lead screw 102 other end is connected to on the drive column 82, the pipeline material of agitator pipe 10 interlude is filter screen 101 that has the aperture.
As shown in fig. 1, the drive mechanism 22 includes: the crushing device comprises a driving wheel 221, a fixed column 222 fixedly arranged at the position of the center of the circle of the driving wheel 221, a driving rocker 226 provided with a sliding chute 223 in the middle, and a sliding plate 224 capable of horizontally sliding in the crushing chamber 2, wherein the fixed column 222 is slidably arranged in the sliding chute 223, one end of the driving rocker 226 is rotatably arranged at the bottom of the driving mechanism 22, the other end of the driving rocker 226 is rotatably arranged at the center of the sliding plate 224, the sliding plate 224 is slidably arranged in a sliding rail 225, and the sliding rail 225 is arranged at the middle position of the bottom surface in the crushing chamber 2.
As shown in fig. 1 and 2, the crushing mechanism 21 includes: the crushing device comprises support frames 211 arranged at two ends of the sliding plate 224, a plurality of crushing wheels 212 rotatably arranged on the support frames 221, a second bevel gear 215 arranged on each crushing wheel 212, and a first bevel gear 214 engaged with the second bevel gear 215, wherein the first bevel gears 214 are connected through a drive rod 213 and complete driving.
As shown in fig. 1 and 3, the second drive mechanism 5 includes: driven teeth 53 provided on the rotation shaft 411 and one end of the control plate 31, and a rack 521 engaged with the driven teeth 53, wherein the rack 521 is provided on one side of a hydraulic rod 52, one end of the hydraulic rod 52 is fixedly provided at the bottom of the pulverization chamber 2, and the other end is driven by a cam 51 provided on the drying mechanism 4.
As shown in fig. 4 and 5, the area of the cross section of the passage 34 is smaller than the area of the cross section of the drying mechanism 4.
As shown in fig. 1, a filter plate 23 is provided inside the pulverization chamber 2 at a position below the pulverization mechanism 21.
As shown in fig. 1, one end of the control gate 94 near the driving column 82 is connected to the liquid inlet 95 via a limit rotating shaft.
As shown in fig. 4, the drying column 41 includes: the heating rod is heated through external electrification.
As shown in fig. 3, the driven tooth 53 is provided on the rotating shaft 411 and one end of the control plate 31 on the same vertical shaft.
The method for soil remediation by the device comprises the following steps:
s1 crushing of soil
Soil enters the crushing chamber 2 from the soil inlet pipe 11, the driving wheel 221 rotates, the fixed column 222 slides in the sliding groove 223, and because one end of the driving rocker 226 is fixed on the inner bottom surface of the first driving mechanism 22, the other end of the driving rocker 226 drives the sliding plate 224 to slide in the sliding groove 223, namely, the supporting frame 221 starts to slide horizontally in the crushing chamber 2, the motor connected to the driving rod 213 is started, the driving rod 213 rotates, each crushing wheel 212 rotates through the meshing action of the first bevel gear 214 and the second bevel gear 215, and soil crushing is completed;
s2: drying of soil
The crushed soil enters the control mechanism 3 through the filter plate 23, the cam 51 rotates to enable the hydraulic rod 52 provided with the rack 521 to do telescopic motion, the rack 521 is meshed with the driven gear 53 to enable the control plate 31 to turn over, the intermittent soil feeding is completed, the drying column 41 rotates to complete the extrusion drying, and the dried soil enters the collection chamber 6;
s3 soil spray
The dried soil enters the stirring pipe 10 from the collection chamber 6, the spray liquid enters the spray pipe 9 through the spray liquid box 7, the driving rotary disc 81 is driven to rotate to drive the driving column 82 to rotate, the piston rod 93 drives the piston 92 to start sliding, the piston 92 is pulled outwards, the control door 94 is opened, the spray liquid enters, the piston 92 is extruded inwards, the control door 94 is closed, the spray liquid is sprayed out from the spray head 91, the screw rod 102 and the piston rod 93 are connected to the driving column 82, when the piston 92 is extruded and pulled out, the screw rod 102 drives the stirring head 105 to stir, so that the spray liquid contacts the soil to a greater extent, the cleaned soil seeps out of the filter screen 101 and is precipitated in the precipitation box 12 at the bottom of the treatment box 1, the precipitation box 12 is provided with fine holes, the soil is precipitated in the precipitation box 12, and the spray liquid flows out from the fine holes and is discharged out of.
The spray liquid in this embodiment is: tween80 organic solvent at a concentration of 5 mmol/L.
The soil restoring capacity of the device reaches 24-26m3And d, the removal rate of the target pollutants in the soil is more than 90% through intermittent drying and intermittent stirring and spraying treatment. The environment quality of the repaired soil meets the standard of the corresponding land type soil or meets the requirement of a safe recycling function, and the treated waste liquid meets the requirement of safe discharge.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110124704.XA CN113000579B (en) | 2021-01-29 | 2021-01-29 | Device and method for ex-situ remediation of POPs pesticide contaminated soil |
| JP2022010022A JP7082733B1 (en) | 2021-01-29 | 2022-01-26 | Ectopic repair equipment and methods for POPs-based pesticide-contaminated soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110124704.XA CN113000579B (en) | 2021-01-29 | 2021-01-29 | Device and method for ex-situ remediation of POPs pesticide contaminated soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113000579A true CN113000579A (en) | 2021-06-22 |
| CN113000579B CN113000579B (en) | 2022-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110124704.XA Expired - Fee Related CN113000579B (en) | 2021-01-29 | 2021-01-29 | Device and method for ex-situ remediation of POPs pesticide contaminated soil |
Country Status (2)
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| JP (1) | JP7082733B1 (en) |
| CN (1) | CN113000579B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116441297A (en) * | 2023-05-06 | 2023-07-18 | 生态环境部南京环境科学研究所 | Electroplating plant contaminated soil leaching treatment equipment and method capable of adjusting liquid-soil ratio |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113000579B (en) | 2022-04-01 |
| JP2022117467A (en) | 2022-08-10 |
| JP7082733B1 (en) | 2022-06-09 |
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